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https://issues.apache.org/jira/browse/CASSANDRA-18845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17765558#comment-17765558
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Brandon Williams edited comment on CASSANDRA-18845 at 9/15/23 11:03 AM:
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CASSANDRA-18543 is going to be reverted on CASSANDRA-18854 for causing a
regression. The next step for this ticket to move forward will be to create
tests that demonstrate the problem and guard against regressions.
was (Author: brandon.williams):
CASSANDRA-18543 is going to be reverted for causing a regression. The next
step for this ticket to move forward will be to create tests that demonstrate
the problem and guard against regressions.
> Waiting for gossip to settle on live endpoints
> ----------------------------------------------
>
> Key: CASSANDRA-18845
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18845
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Cameron Zemek
> Priority: Normal
> Attachments: 18845-3.11.patch, 18845-4.0.patch, 18845-4.1.patch,
> 18845-5.0.patch, image-2023-09-14-11-16-23-020.png
>
>
> This is a follow up to CASSANDRA-18543
> Although that ticket added ability to set cassandra.gossip_settle_min_wait_ms
> this is tedious and error prone. On a node just observed a 79 second gap
> between waiting for gossip and the first echo response to indicate a node is
> UP.
> The problem being that do not want to start Native Transport until gossip
> settles otherwise queries can fail consistency such as LOCAL_QUORUM as it
> thinks the replicas are still in DOWN state.
> Instead of having to set gossip_settle_min_wait_ms I am proposing that
> (outside single node cluster) wait for UP message from another node before
> considering gossip as settled. Eg.
> {code:java}
> if (currentSize == epSize && currentLive == liveSize && liveSize
> > 1)
> {
> logger.debug("Gossip looks settled.");
> numOkay++;
> } {code}
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